The maximum power dissipation of the NE4558D is 670mW, which is calculated based on the maximum junction temperature (Tj) of 150°C and the thermal resistance (Rthja) of 125°C/W.
While the NE4558D can be used as a comparator, it's not the best choice due to its relatively slow slew rate (0.5V/μs) and limited bandwidth (3MHz). A dedicated comparator like the LM339 or LM2901 would be a better option.
To ensure stability, make sure to follow proper PCB layout practices, use a bypass capacitor (e.g., 10nF) between the supply pins, and consider adding a compensation capacitor (e.g., 10pF) between the output and the inverting input.
The input impedance of the NE4558D is typically around 2MΩ, but it can vary depending on the specific application and operating conditions. It's essential to consider this when designing the input stage of your circuit.
Yes, the NE4558D can be used in a single-supply configuration, but you'll need to ensure that the input signals are referenced to the midpoint of the supply voltage. You may also need to add a voltage divider or level shifter to accommodate the input common-mode range.
